EP0924155B2 - Hydraulic elevator without a machineroom - Google Patents

Hydraulic elevator without a machineroom Download PDF

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Publication number
EP0924155B2
EP0924155B2 EP98309942A EP98309942A EP0924155B2 EP 0924155 B2 EP0924155 B2 EP 0924155B2 EP 98309942 A EP98309942 A EP 98309942A EP 98309942 A EP98309942 A EP 98309942A EP 0924155 B2 EP0924155 B2 EP 0924155B2
Authority
EP
European Patent Office
Prior art keywords
tank
car
pump
cylinder
hoistway
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98309942A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0924155A3 (en
EP0924155A2 (en
EP0924155B1 (en
Inventor
Leandre Adifon
Carlo Varisco
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otis Elevator Co
Original Assignee
Otis Elevator Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Otis Elevator Co filed Critical Otis Elevator Co
Publication of EP0924155A2 publication Critical patent/EP0924155A2/en
Publication of EP0924155A3 publication Critical patent/EP0924155A3/en
Application granted granted Critical
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Publication of EP0924155B2 publication Critical patent/EP0924155B2/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/04—Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically

Definitions

  • the present invention relates to hydraulic elevators.
  • Conventional hydraulic elevators include a hydraulically driven ram to raise an elevator car. Lowering of the car is typically accomplished by permitting fluid to exit the cylinder of the hydraulic ram and using the weight of the car to force the fluid out of the cylinder.
  • the piston may be directly engaged with the car or may be engaged with the car via a rope fixed to the hoistway and engaged with a sheave on a yoke on the piston. The latter arrangement provides the benefit of not requiring a hole under the hoistway to receive the hydraulic cylinder.
  • hydraulic elevators as compared to traction elevators is the lower cost of the installation.
  • Another traditional advantage is that the machineroom for the hydraulic elevator may be located anywhere in the building, rather than above the hoistway as in traditional traction elevators. Even though the machineroom for a hydraulic elevator may be remotely located, it is still necessary to provide such a space in order to provide a closed and protected area for the hydraulic components: the fluid tank, the pump (typically submerged in the tank of fluid), and the valves associated with the pump and tank.
  • the machineroom includes a controller that includes the various electrical components for the hydraulic elevator system.
  • An elevator system having the feature, as set forth in the preamble of claim 1 is known from SE-B-332698.
  • a elevator system having a car movable within a hoistway, the system including a hydraulic cylinder, a fluid tank, a pump for moving fluid between the tank and cylinder, and a valve block that controls the flow of fluid between the tank and cylinder, the pump and the value block operating to transfer fluid to or from the cylinder to raise or lower the car during operation of the hydraulic elevator system wherein the valve block is located remotely from the tank and the pump.
  • the pump and tank may be located in the hoistway and the valve block may be located in a cabinet along with various electronic components of the hydraulic elevator system.
  • the cabinet may be conveniently positioned adjacent to a landing so that a mechanic will have access to the valve block and electronic control without having to enter the hoistway.
  • the hydraulic elevator system includes a car and a hydraulic cylinder positioned adjacent to the travel path of the car and mounted on a support, and wherein the pump and tank are positioned underneath the support.
  • This arrangement of the cylinder, pump and tank provides a compact configuration that minimizes the space requirements of the hoistway.
  • the cylinder includes a sheave engaged with a rope, wherein the rope is attached to the car by a rope hitch, and wherein the rope hitch is disposed on the car in a position to avoid interference when the car is adjacent to the tank and pump.
  • This particular embodiment provides a configuration that permits the use of a roped hydraulic elevator without a machineroom.
  • a hydraulic elevator system 12 which includes a car 14 engaged with a pair of guide rails 16, a hydraulic cylinder 18 having a piston 20, a fluid tank 22 having a pump 24 disposed within the tank 22, and a plurality of ropes 26.
  • the ropes 26 have one end attached to the car 14 by a rope hitch 28 and the opposite end anchored in the hoistway 29.
  • the ropes 26 extend over a sheave 30 mounted on the upper end of the piston 20. Movement of the piston 20 is guided by a yoke 32 engaged with the pair of guide rails 16.
  • the piston 20 moves within the cylinder 18 and causes the sheave 30 to raise and lower within the hoistway 29. Movement of the sheave 30 causes the car 14 to raise and lower in the hoistway 29 via the engagement with the ropes 26.
  • the cylinder 18 includes a cylinder stand 34 that is mounted on a support assembly 36 positioned between the guide rails 16.
  • the support assembly 36 includes a horizontal support 38, formed from a conventional I-beam structure, and a pair of vertical uprights 40 that are adjacent to the pair of guide rails 16 and are supported by the bottom or pit 42 of the hoistway 29.
  • the horizontal support 38 also provides an anchor point 44 for the ropes 26.
  • the cylinder 18 is raised above or off-set from the pit 42.
  • the integral tank 22 and pump 24 are disposed in the opening defined by the support assembly 36.
  • the pump 24 is internal to the tank 22 and submerged in the fluid. As a result of not integrating a valve block and various other valve components to the tank 22 and pump 24, the size of the tank 22 is minimized and may be proportioned to fit in the available space.
  • the cylinder 18, support assembly 36, guide rails 16, tank 22 and pump 24 are all positioned along one side of the travel path of the car 14.
  • the car 14 may be adjacent to one or more of the components in the hoistway 29.
  • the rope hitch 28 is positioned at the top of the car 14.
  • the ropes are hitched or engaged with the bottom of the car to maximize the rise of the car.
  • the off-set produced by the support assembly 36 increases the rise of the car 14 and therefore the ropes 26 may be engaged or hitched to the top of the car 14 without significantly affecting the rise of the car 14.
  • control valve assembly 46 The flow of fluid between the tank 22 and cylinder 18 is controlled by a control valve assembly 46 and an electronic controller 48.
  • These devices 46,48 as shown in Fig. 2, are located in a cabinet 50 positioned adjacent to one of the landings of the hoistway 29. Access to the control valve assembly 46 and controller 48 is through a locked door 52. The door 52 is locked to prevent unauthorized access to the controller 48 and the control valve assembly 46.
  • the electronic controller 48 is in the upper part of the cabinet 50 and the control valve assembly 46 in is the lower part of the cabinet. This particular arrangement takes advantage of the height of the cabinet 50, and the possibility to separate the electronic controller 48 into components that may be mounted in the cabinet 50 or on the door 52, in order to minimize the space requirements of the cabinet 50.
  • the cabinet 50 may be located in other convenient locations.
  • the cabinet 50 may be separated into two or more cabinets. I n this configuration, the electronic controller 48 may be separated from the control valve assembly 46, if desired. Further, the controller and control valve assembly, including the valve block, may be separated into multiple modules, with each module conveniently located.
  • the control valve assembly 46 includes a valve block 54, a muffler 56 and a manually operable release mechanism 58.
  • the control valve assembly 46 is in fluid communication with the tank 22 by a plurality of fluid lines 60.
  • the valve block 54 includes various valve stems and channels that control the flow of fluid between the cylinder 18 and pump 24 using conventional valve technology.
  • the muffler 56 regulates the fluid flow from the valve block 54 to the cylinder 18.
  • the release mechanism 58 permits a mechanic to manually open the valves to flow fluid from the cylinder 18 and into the tank 22.
  • the manual operation of the valves may be used during emergency operations to lower the car 14 and evacuate passengers.
  • a manually operable mechanism 58 other mechanisms may be used, such as electrically controllable actuators connected to a back-up power supply.
  • the electronic controller 48 signals the pump 24 and valve block 54 to operate in the desired manner to transfer fluid to or from the cylinder 18 and to raise or lower the car 14. If service of the hydraulic elevator system 12 is required, a mechanic may get access to both the controller 48 and the valve block 54 by unlocking the cabinet 50. Locating the cabinet 50 with the controller 48 and valve block 54 near a landing facilitates the maintenance of the hydraulic elevator system 12. In addition, in the event of an emergency, the mechanic may get access to the manual release mechanism 58 through the cabinet 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
  • Fluid-Pressure Circuits (AREA)
EP98309942A 1997-12-22 1998-12-04 Hydraulic elevator without a machineroom Expired - Lifetime EP0924155B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/995,507 US6378660B1 (en) 1997-12-22 1997-12-22 Hydraulic elevator without a machineroom
US995507 1997-12-22

Publications (4)

Publication Number Publication Date
EP0924155A2 EP0924155A2 (en) 1999-06-23
EP0924155A3 EP0924155A3 (en) 1999-11-10
EP0924155B1 EP0924155B1 (en) 2002-05-02
EP0924155B2 true EP0924155B2 (en) 2005-06-22

Family

ID=25541906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98309942A Expired - Lifetime EP0924155B2 (en) 1997-12-22 1998-12-04 Hydraulic elevator without a machineroom

Country Status (4)

Country Link
US (1) US6378660B1 (es)
EP (1) EP0924155B2 (es)
DE (1) DE69805147T3 (es)
ES (1) ES2173553T5 (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1306053B1 (it) * 1998-06-09 2001-05-29 Menozzi Renzo S R L Ascensore idraulico
US6371005B1 (en) * 1999-08-30 2002-04-16 Otis Elevator Company Hydraulic power unit for an elevator drive
US6719099B2 (en) 2002-05-13 2004-04-13 Inventio Ag Integral elevator hydraulic power unit
BR0316297B1 (pt) * 2002-11-18 2012-09-04 unidade para monitoração de elevador e procedimento para a manutenção de uma unidade de monitoração de elevador.
ITRM20030007A1 (it) * 2003-01-10 2004-07-11 Otis Elevator Co Dispositivo di sollevamento a pistone, in particolare
FR2877932B1 (fr) * 2003-08-26 2007-02-16 Thyssenkrupp Elevator Mfg F Systeme d'ascenseur pourvu d'une unite de motorisation sur contrepoids
US7946391B2 (en) 2005-07-19 2011-05-24 Bucher Hydraulics Ag Hydraulic elevator without machine room
EP2376359B1 (en) * 2008-12-19 2015-01-21 Otis Elevator Company Elevator door frame with electronics housing
US9517921B2 (en) 2011-05-20 2016-12-13 Otis Elevator Company Machine roomless hydraulic elevator system
EP2530043A1 (de) * 2011-05-30 2012-12-05 Inventio AG Aufzugschachtabschluss mit einer Aufzugkontrollanordnung
EP2530044A1 (de) * 2011-05-30 2012-12-05 Inventio AG Aufzugschachtabschluss mit einer Aufzugkontrollanordnung
JP5952537B2 (ja) * 2011-07-21 2016-07-13 パナソニック ホームエレベーター株式会社 エレベータ昇降装置
JP5952538B2 (ja) * 2011-07-21 2016-07-13 パナソニック ホームエレベーター株式会社 エレベータ昇降装置
CN104703902B (zh) * 2012-10-03 2016-08-17 三菱电机株式会社 电梯控制盘和使用电梯控制盘的电梯装置
US9573791B2 (en) * 2013-02-13 2017-02-21 Kone Corporation Elevators and elevator arrangements with maintenance cabinet in landing wall
US10647546B2 (en) * 2016-12-16 2020-05-12 Otis Elevator Company Hydraulically activated shutoff valve for a hydraulic elevator system
RU2650285C1 (ru) * 2017-02-07 2018-04-11 Публичное акционерное общество "Невское проектно-конструкторское бюро" Гидравлический привод корабельного подъемника

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE332698B (es) 1968-05-30 1971-02-15 Asea Ab
US4438831A (en) * 1980-01-07 1984-03-27 Westinghouse Electric Corp. Elevator system
JPS63106289A (ja) * 1986-10-22 1988-05-11 株式会社日立製作所 流体圧エレベ−タ
FI83204C (fi) * 1987-11-04 1991-06-10 Kone Oy Foerfarande och anordning foer foerbaettring av verkningsgraden hos en motorstyrd hydraulhiss.
JPH02296497A (ja) 1989-05-11 1990-12-07 Shoji Uchikawa ３指向特性を有するマイクロホン
JPH04169491A (ja) * 1990-10-31 1992-06-17 Taiyo Ltd 油圧式エレベータ装置
JPH07114228A (ja) 1993-10-15 1995-05-02 Canon Aptecs Kk 原稿搬送装置及び投影装置
FI95456C (fi) 1994-05-04 1996-02-12 Kone Oy Järjestely hissikuilun seinän aukossa ja kojetaulu
JPH08310770A (ja) * 1995-05-12 1996-11-26 Hitachi Ltd 油圧式エレベータ

Also Published As

Publication number Publication date
ES2173553T5 (es) 2005-10-16
EP0924155A3 (en) 1999-11-10
DE69805147D1 (de) 2002-06-06
ES2173553T3 (es) 2002-10-16
US6378660B1 (en) 2002-04-30
DE69805147T2 (de) 2003-03-06
DE69805147T3 (de) 2005-12-08
EP0924155A2 (en) 1999-06-23
EP0924155B1 (en) 2002-05-02

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